Preset-owned subagent composition
由 preset 拥有 subagent 组装
Agent Presets already compose persona and tool plugins. Independent child persona and tool-filter inputs create a second place to configure that composition. The shipped consumers of child filtering are the six schedule deny lists in the spawn and fork rows of the standard, PTC, and Cordis presets; reminder executors already refuse delegated callers.
English
Problem
Agent Presets already compose persona and tool plugins. Independent child persona and tool-filter inputs create a second place to configure that composition. The shipped consumers of child filtering are the six schedule deny lists in the spawn and fork rows of the standard, PTC, and Cordis presets; reminder executors already refuse delegated callers.
Decision
New subagent requests select an Agent Preset where the provider supports it. Persona and tools come from its plugin list. Fork inherits the parent's preset revision; model and effort selection keep their existing configuration. No preset-level filter or finer plugin split is added without a concrete consumer.
dsh-tool-subagent rejects removed persona and toolFilter keys at load, including empty values, because deleting Schemastery fields alone does not reject unknown configuration. The upgrade guide states the lost independent override capability and the migration.
Released child descriptors keep their persona and filter fields, parsing, and cold-resume application. The original composition note remains active for these historical semantics and the independent depth policy. The spawn preset decision continues to own selection and restoration identity.
The shipped child schedule deny lists are absent. Reminder schemas remain visible when inherited from the preset; each executor rejects delegated callers. This avoids that source of parent/fork schema differences. Children receive four reminder schemas whose executors always refuse them. Neither their prompt cost nor a provider cache-hit improvement has been measured; other request inputs can still differ.
Alternatives considered
Move the filter into each preset. This preserves the schedule deny lists and independent fork tool trimming, but retains two configuration mechanisms for tool availability. New children use plugin composition; fork deliberately inherits the parent's tools.
Keep per-request overrides alongside presets. This retains independent fork overrides, their precedence rules, and provider capability flags. A single composition mechanism is preferred over that flexibility for new children.
Delete historical descriptor fields with the request fields. This would change or reject restored sessions. New-request simplification does not authorize rewriting released Session data.
Consequences
Preset selection owns new child persona and tools. Fork cannot independently replace persona or trim inherited tools, and JavaScript configuration with the removed keys fails explicitly. Historical restoration retains its previous semantics. Focused tests cover removed-key diagnostics, historical persona/filter restoration, inherited reminder schemas and executor refusal; recorded sessions cover preset-owned tool availability, fork reminder refusals, and messaging guidance.
中文
问题
Agent Preset 已经组合 persona 和工具插件。独立的子级 persona 和工具过滤输入又增加了一处组装配置。已交付的子级过滤消费者是 standard、PTC 和 Cordis preset 中 spawn 与 fork 配置行的六份 schedule deny 列表；提醒执行器已经拒绝委派调用方。
决策
新 subagent 请求在提供方支持时选择 Agent Preset。persona 和工具来自其插件列表。fork 继承父级的 preset 代际；model 和 effort 选择保留现有配置。没有具体消费者时，不添加 preset 级过滤器或更细的插件拆分。
dsh-tool-subagent 在加载时拒绝已删除的 persona 和 toolFilter 键，包括空值，因为仅删除 Schemastery 字段不会拒绝未知配置。升级指南说明失去的独立覆盖能力及迁移方法。
已发布的子级 descriptor 保留 persona 和 filter 字段、解析及冷恢复应用。原组装记录继续保留，以说明这些历史语义及独立的深度策略。spawn preset 决策继续拥有选择与恢复身份的依据。
已交付配置中不含子级 schedule deny 列表。从 preset 继承的提醒 schema 仍然可见；每个执行器拒绝委派调用方。这消除了一处父级与 fork 子级 schema 差异的来源。子级会收到四个始终拒绝其调用的提醒 schema；尚未测量它们的提示成本或提供方缓存命中率改善，其他请求输入仍可能不同。
曾考虑的替代方案
把过滤器移入各 preset。 这保留了 schedule deny 列表和独立裁剪 fork 工具的能力，但仍有两种配置工具可用性的机制。新子级使用插件组装；fork 明确继承父级工具。
在 preset 之外保留逐请求覆盖。 这保留独立的 fork 覆盖、覆盖优先级规则和提供方能力标志。对新子级选择单一组装机制，放弃这项灵活性。
随请求字段一起删除历史 descriptor 字段。 这会改变或拒绝恢复的会话。简化新请求不意味着可以重写已发布的 Session 数据。
后果
preset 选择拥有新子级的 persona 和工具。fork 不能独立替换 persona 或裁剪继承工具，含已删除键的 JavaScript 配置会明确报错。历史恢复保留原有语义。针对性测试覆盖删除键的诊断、历史 persona／filter 恢复、继承的提醒 schema 及执行器拒绝；会话录制覆盖由 preset 控制的工具可用性、fork 提醒拒绝及消息指引。